CISPR 14-1 specifies the requirements that apply to the emission of radio-frequency disturbances in the frequency range 9 kHz to 400 GHz from appliances, electric tools, and similar apparatus, whether powered by AC or DC (including a battery). Also included in the scope of CISPR 14-1 are separate parts of the above-mentioned equipment such as motors and switching devices (e.g. power or protective relays); however, no emission requirements apply to such separate parts, unless otherwise stated in this standard.
The limits in this standard have been determined on a probabilistic basis, to keep the suppression of disturbances economically feasible while still achieving adequate radio protection. In exceptional cases, radio frequency interference may occur, despite compliance with the limits. In such a case, additional provisions may be required.
The effects of electromagnetic phenomena relating to the safety of the apparatus are excluded from the scope of this standard.
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